Floor polishing machine



Oct. 11, 1932. c BEACH 1,882,270

FLOOR POLISHING MACHINE Filed Feb. 8, 1928 5 Sheets-Sheet 1 [/2 /6): far: Cheat?! f1? Bea (/1,

FLOOR POLISHING MACHINE Filed Feb. 8, 1928 3 Sheets-Sheet, 2

Oct. 11, 1932. c. H. BEACH 1,382,270

FLOOR POLISHING MACHINE Fil Feb. 8. 192a SSheets-Sheet 5- 27 I [n 7/en for;

61185 ter/[Beach 20 ing machine which may Patented Oct. 11, 1932 onnsrsn n. BEACH. o1" BACINE, wrsoonsm; 'nssrcrnort, :ey vrnsnnassrenmnnrs, ro

so. aonnson & somor RAQINE, Wisconsin, A man FLOOR ronrsnme MACHINE I Application filed February s, 1928. Serial 110152303.

This. invention relates to floor polishing machines.

The floor polishing machine to which the invention'applies in particular is'ofthe type ,5inj which an endless belt brush is driven by i an electric motor. 7 l

The invention has as an object to provide a floor polishing machine in which the'brush has a large area in continual engagement with the floor.

- Another object is to provide a floor polishing machine'which will expedite polishing a large area. Another object is to provide a floor polishing machine which is simple and compact.

Another object is .to provide a simple and efficient drivingmechanism to drive the belt brush. I

Another object is to provide a floor polishbe readily and economically manufactured.

According to the invention as it is ordinarily embodied in practice, the floor polishing machine is provided with a frame having a 2 wheel or roller at each end thereof, an endlessbelt brush passing over the wheels or rollers and underneath the frame and supporting the frame from the floor, and an electric motor carried by. the frame within the belt brush and between the rollers and having'itsshaft arrangedlengthwise in the machine at right 'angles'to the wheels or rollers and geared to one of the wheels or rollersto drive-the belt brush.

' Thejfloor polishing the accompanying drawings exemplifies the invention and the views therein, are as follows;' i i Fig. 1 .is a side view chine? Fig. 2-is a "sideview with the handle Omitted; V y g Fig. 3 is a central longitudinal section through'the machine; i f 4 Fig. 4 is a top-plan view of the machine with the belt brushand the'handle removed; Fig. 5 is a transverse section taken on the irregularline 5-5 ofFig. 2;

Fig. 6=is aperspective view of the handle; Fig. 7 is a detail view of a socket which of complete machine illustrated in connects the handle to the frame of the machine;

Fig. 8 is a section 7;and I .7

Fig. 9'is 'a cross-section through the handle, taken on the line 9f9 of Fig.6. 1

The floor polishing machine-is provided with a frame formed by a bottom plate 1 on the line 8 8" of having a side plate 2 arranged upon each side thereof, astationary arm 3 formed upon Y the. front end of-each side plate, and a movable arm 4 arranged at the rear; end of each sideplate and pivoted thereto. r f 1 The frame is provided at itsfront end with a lower driving wheelv or roller ,5- and an upper wheel or roller 6, and at, its rear end with a lowerwheel or roller? and an upper wheel or. roller 8.

Thelower roller 5 is arranged between the v side plates 2 upon an axle 9, and the upper roller 6 .is arranged between the stationary arms 3 upon an: axle 10. I a I The roller-8;is arranged between the upper and the roller -7 is' arrangedbetweenthe lower, ends of the arms 4; upon an :axle 12v upon whichthe arms et'arepivoteda 7 The axles of the rollers aresupported b ends ,of-the movable arms 4 upon an axle 11, W p

the frameand are ordinarily retained in po Hi x ythreaded into the ends of the, axles.

snf

, The rollers carry-"an endless belt brush which passes over all of,

the. rollers and underneath the-frame. l l

each edge thereof. .4

The machine is supported, upon the fioor The belt brushis formed by an endless belt solely by the belt brush, and-its entire weight 7 7 serves to press the brushes against the floor. The belt brush has the brushes upon the lower run thereof keptin uniformengagement with the floor by rollers 15., V

The rollers 151113011 each side of the machine have the axles thereof bearing in a removable carrier lfi'whichis attached tot-he side plate 2.

" The-belt brush is'kept fromshifting upon movable arm a and urges the roller 8 -rear-z the rollers byremovable belt guides 17 at tached to the stationary arms 3 and extendthe brushes. 7 c y The'belt brush hasits tension maintained by. tvvo springs .18 each of which engages a Wardly to keep the belt taut. I The belt brushis driven. to travel in the direction of the arrow sh'own in F ig.'2, by an electric motor? 19 which is carried by "the bottom plate 1 and has its shaft parallel-to.

the path of the'belt brush or at right angles "to'the axis of the driving roller 5;

p The motor drives the belt brush through a screw-or worm '20 which is carried by'the motor shaft and meshes with a screwgear -or worm wheel 21" carried by the "roller 5 intermediate the ends thereof. a g 7 The motor has current supplied thereto through two conduct0rs 22 and 23 each of which has one of its'ends connected tothe motor and its other end connectedfto a trunelectrically insulated therefrom.

nion 24'whichis fixed in'[ aside *plate 2 The machine 's moved-and guided by a handle 25 havinga yoke26arranged at the The yoke 26 front end thereof and pivotedupon the trunnions 24.

ing a conducting bearing 28 arranged therein and electrically insulated therefrom by an insulating bushing 29; f c c I The bearing 28 is fitted upon a'trunn ion 24 to pivot thereon and to provide a mechanical connection between the handle and the "frame and an electrical connectionjbetween themotor and an external electric circuit The motor 19- may be; connected into an" electric-circuit by'two conductors 30 and 31' which are connected to the bearings 28 and arranged in suitable grooves handle25 and in the fork 26.

formed in the 3 The conductors 30 and 31 have aconnecto r 32 attached to the free ends thereof for cone 7 .nection into an electric circuit, and'the flow of current through the conductors is controlled by aswitch 33 carried by the'handle A floor polishing machine" constructed according to the invention is compact due to the motor being arranged withinfthe belt brush roller. f

with its shaft right anglejs tor the driving The invention herein set forth is susceptible of various modificationswithout departingifrom the scope thereof as defined by the hereinafter claims. 1

The invention set forth inthe foregoing specification is hereby claimed as follows t [1. A floor polishing machine comprisinga frame, a lower wheelarranged in said frame at each end thereof, an npperwheelarranged g has each arm thereof provided at its front end with a bearing socket'27 hav- =nected to said frame.

in said frame at each end thereof above a lower wheel, an endless' belt brush passing over said Wheels andunderneath said frame and solely supporting the machine from the floor, a-motor carried by said frame and having its 'shaftat right angles to said wheels 2.. A floor polishing machine comprising a frame, a lower-"wheel arranged in said frame at eachend thereof, an upper wheel arranged in said frame at each end thereof above a lo'werfWheel, an. endless belt brush passing over said wheels and underneath said frame and solely supporting the machine from the fioor,;a motor carried by saidframe and having its shaftatfright angles toone of said wheels, a worm gear carri'edbysaid wheel intermediate the ends thereof, a worm carried by said motor shaft and meshing with said worm gear to. rotate said wheel and drive said frame.

said belt brush, and a'handle' connected to 3, floor polishing machine comprising a 9 "frame, a lower wheel arranged in'sald frame ateach-end thereof, an upper wheel arranged in said frame at each end thereof above a lower wheel, an endless belt brush; passing v over said wheels and underneathsaid frame and solelysupporting the machine from the floor, belt, guides carried by said frame and and geared to a lower wheel intermediate the or 7 .ends thereof to drive said belt brush, and a handle connected to said frame. J

overlapping theedges of .said belt brush to prevent excessivejlateral displacement there.- of, a motor carriedby said frame and having its shaft at right: angles to said wheels and geared to a lower wheel intermediate the ends thereof to drive saidzbelt brush, and a handle connectedito said .frame.

frame at eachend thereof, annpper'wheel arranged in said frame at-each' end there- 4., Av floor polishing} machine comprising a frame, a lower wheelarranged; in said ofabove aglower wheel [an endless belt carried by said "belt and supporting the" machine from the floor rollers-carried by said frame anden'gaging the brushes ca'r- H 'riedj bythelovvenIun-of said belt to hold the brushes carriedfthereby in uniform engagement-with the floor, a'inotor carried by said frame. Withinsaidbeltand'having its shaft at right angles to said wheels and geared to'a lower Wheel intermediate the'ends thereofuto drivesaid belt, and a handlecon- 5, A floor polishing; machine comprising a in said-frame at each end thereof above a lower wheel, aniendlesjs belt passing over said brushes carriedfby said belt "and solely suppassing over said wheels, and ,under; 'lneath said frame, relatively narrow brushes frame, a lower wheelarranged in said frame r at each end thereof, anupper wheel arranged 7 wheels nd underneath said frame, arrow nected to said frame.

wheels, a worm gear carried by saidwheel intermediate the ends thereof, a worm carried by said motor shaft and meshing with said worm gear to rotate said wheel and drive said belt, and a handle connected'to said frame.

6. A floor polishing machine, comprising a frame, a lower roller arranged at each endof said frame, an upper roller arranged at each end of said frame above a lower roller, an endless belt brush carried by saidrollers and solely supporting the machine from the floor, a motor carried by said frame within said belt brush and having its shaft arranged,

transverse to a lower roller and geared thereto to drive said belt brush, and a handle connected to said frame.

7. A floor polishing mac hine,comprising a frame, a lower roller arranged at each end of said frame, an upper roller arranged at each end of said frame above said lower roller, an endless belt brush carried by said rollers and solely supporting the machine from the floor, rollers arranged upon said frame to keep said belt brush in-engagement with the floor between said lower rollers, a motor carried by said frame within said belt brush and having its shaft at right angles to a lower roller and geared thereto to drive said belt brush, and a handle connected to said frame.

8. A. floor polishing machine, comprising a frame, a lower roller arranged at each end of said frame, an upper roller at one end of said frame above a. lower roller, an arm pivoted to said frame upon each side thereof at the other end of said frame, another upper roller carried by said arms at the upperends thereof, a spring urging the latter up per roller away from the other, upper roller, an endless belt brush carried by said rollers and solely supporting the machine from the floor, a motor carried by said frame within said belt brush and having its shaft at right angles to a lower roller and geared thereto to drive said belt brush,

9. A floor polishing machine, comprising a frame, a lower roller arranged at each end of said frame, an upper roller arranged above each lower roller, means carrying an upper roller to urge it away from the other upper roller, an endless belt brush carried by said rollers and solely supporting the machine from the floor, a motor carried by said frame within said belt brush and having 1ts shaftat right angles to a lower roller and geared thereto'to drive said belt brush, and a handle connected to said frame.

10. A floor'polishing machine, comprising a frame, a roller carried by said frame at each end thereof, an endless belt brush passing over said rollers and underneath said frame and solely supporting the machine from the floor, a motor carried by said frame'within said belt brush and between said rollers andv having its shaft transverse to said rollers and lengthwisein said machine, gearing connecting said shaft to an aforesaid roller to drive said belt brush, and a handle connected to said frame to. move and guide the machine upon the fioor.

, 11. A floor polishing machine, comprising a frame, a belt carrier arranged at each end of said frame, an endless belt brush carried by said belt carriers and supporting said frame from the floor, a driving roller arranged in an aforesaid belt carrier, a motor carried by said frame within said belt brush and bee tween said belt carriers and having its shaft transverse to said driving roller and geared thereto by a screwv gear to drive said belt brush, and a handle connected to said frame to move and guide the machine upon the floor. I

In witness whereof, I have hereunto subscribed my name.

CHESTER H. BEACH.

and a handle con-J 

